tef 7/6/2026 16 min video 3 slides

Claude Fable 5 vs. China's GLM 5.2: A Real Head-to-Head Building Three Games From Scratch

#Claude Fable 5 #GLM 5.2 #AI game generation #AI benchmark #Claude Code #Z Code

83,867 views 7 highlights

TL;DR · What you'll learn

1 A head-to-head build-off between Claude Fable 5 and China's GLM 5.2, which some say now outperforms Fable 5.
2 Three games are on the table: Terraria (2D Minecraft-style), FNAF (a horror-game classic), and Red Dead Redemption 2 (Western-flavored GTA).
3 Claude Fable 5 runs on Claude Code's Ultra tier; GLM 5.2 runs on Z Code's top paid tier.
4 Claude Fable 5's FNAF clone came together in just 40 minutes, complete with a working camera system -- normally the hardest part to get right.
5 GLM 5.2's Red Dead Redemption 2 clone looked close in appearance, but the controls were noticeably buggy.
6 Claude Fable 5 came out ahead across all three games -- Terraria, FNAF, and RDR2 -- for a clean sweep.
7 GLM 5.2's control bugs are described as subtle enough that most viewers wouldn't notice, but Claude Fable 5 is still judged the clear overall winner.

Read as slides

3 slides total

01 Slide 1 / 3

Watch at 00:00

Three Games, Back to Back

With Claude Fable 5 back, it's time for a head-to-head against China's GLM 5.2, which some say now outperforms it. Both models had already been tested on this channel -- Fable 5 as 'the best AI we've ever tested,' GLM 5.2 as 'pretty good' -- but this is the first direct showdown. Three games are on the table: Terraria (2D Minecraft-style), FNAF (a classic horror game), and Red Dead Redemption 2 (Western-flavored GTA).

Claude Fable 5 runs on Claude Code's Ultra tier, GLM 5.2 on Z Code's top paid tier. Each got essentially the same prompt: build a faithful clone from scratch, error-free, with as many of the original features as possible.

02 Slide 2 / 3

Watch at 07:17

A Working Camera System in 40 Minutes

Claude Fable 5's FNAF clone came together in just 40 minutes -- complete with an eerie, dimly lit character standing in the dark and, crucially, a fully working camera system, usually the hardest part to replicate. It's judged the best FNAF clone this channel has ever produced.

The tense pacing of characters gradually moving between rooms was faithfully reproduced too, successfully capturing the game's horror atmosphere.

03 Slide 3 / 3

Watch at 15:16

GLM 5.2 Holds Its Own, But Buggy Controls Hand Fable 5 a Clean Sweep

GLM 5.2's Red Dead Redemption 2 clone looked visually close to Claude's version, but had noticeably buggy controls -- riding the horse, for instance. Even so, RDR2 staples like weapon switching and enemy encounters came through intact.

In the end, Claude Fable 5 came out ahead across all three games -- Terraria, FNAF, and RDR2 -- for a clean sweep. GLM 5.2's control issues are described as subtle enough that most viewers likely wouldn't notice, but the overall verdict is clear: Claude Fable 5 wins on the whole.

Editor's Take

Comparing models through a concrete, verifiable task like game-building offers more practical signal than abstract benchmark scores. Anchoring the comparison on something AI is known to struggle with -- FNAF's camera system, specifically -- provides more information than surface-level polish alone. That said, an informal solo test like this doesn't guarantee reproducibility or prompt fairness, and it's hard to tell whether GLM 5.2's control bugs reflect the model itself or quirks of the Z Code platform running it. Still, the fact that a Chinese open model is now routinely compared head-to-head with a top commercial model is itself a sign of how the competitive landscape is shifting.

Source

tef

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